1420440766 has 4 divisors (see below), whose sum is σ = 2130661152. Its totient is φ = 710220382.

The previous prime is 1420440751. The next prime is 1420440787. The reversal of 1420440766 is 6670440241.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355110190 + ... + 355110193.

It is an arithmetic number, because the mean of its divisors is an integer number (532665288).

Almost surely, 2^1420440766 is an apocalyptic number.

1420440766 is a deficient number, since it is larger than the sum of its proper divisors (710220386).

1420440766 is an equidigital number, since it uses as much as digits as its factorization.

1420440766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710220385.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 1420440766 is about 37688.7352666549. The cubic root of 1420440766 is about 1124.1071476441.

The spelling of 1420440766 in words is "one billion, four hundred twenty million, four hundred forty thousand, seven hundred sixty-six".